Michelle Pfeiffer, 67, has social media buzzing about how she's 'still incredibly beautiful'

Michelle Pfeiffer is proving that she's a timeless beauty in back-to-back appearances. On Tuesday night, Pfeiffer, 67, attended the Yves Saint Laurent Womenswear show during Paris Fashion Week. The actress was in head-to-toe YSL and wore a black blazer with matching slacks. She rolled her sleeves…